A ball is rolling across the floor at a constant speed. What will happen to the ball if it is exposed
2 answers:
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Answer:
The current is
Explanation:
From the question we are told that
The radius of the loop is
The earth's magnetic field is
The number of turns is
Generally the magnetic field generated by the current in the loop is mathematically represented as
Now for the earth's magnetic field to be canceled out the magnetic field generated by the loop must be equal to the magnetic field out the earth
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Where is the permeability of free space with value
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